Running amp with 2 cabs

My amp head has only 1 speaker output jack, my amp pushes full power at 4 ohms, and slightly less at 8 ohms. If I use (2) 8 ohm cabs, and daisychain them together, is that still running 4 ohms, or do I need 2 output jacks off my amp head to get the 4 ohm operation?
Thanks

Originally posted by GuitarJonz My amp head has only 1 speaker output jack, my amp pushes full power at 4 ohms, and slightly less at 8 ohms. If I use (2) 8 ohm cabs, and daisychain them together, is that still running 4 ohms, or do I need 2 output jacks off my amp head to get the 4 ohm operation?
Thanks